First of all, you need to understand that carbon crystals and graphene are composed of carbon atoms, and carbon atoms will show completely different properties because of different structures, such as both ordinary graphite and diamond, which has a Mohs hardness to the top. The physical and chemical properties of elemental carbon depend on its crystal structure. High hardness diamond and soft and smooth graphite crystal structure is different, each has its own appearance, density, melting point, etc. This is the premise.
Carbon crystal is a crystal structure of carbon. It is made up of many carbon atoms arranged according to certain rules. It has its special properties that differ from other carbon components.
Carbon crystal, full name carbon microcrystalline, is a crystal structure of carbon. It is a kind of plate made of carbon particles as conductive materials and pressed by adhesives. The production of this product does not require any high-end technology and patents.
The working principle of carbon crystal is that under the action of alternating electric field, carbon atoms collide with each other, friction produces molecular movement, thereby generating thermal energy, generating a large amount of infrared radiation, and its electrical energy and thermal energy conversion rate is more than 98%. Within 30 seconds of power-on, the surface temperature of the heating element rises rapidly from the ambient temperature, 3-5 minutes can reach a set temperature, and the heat energy is transmitted to the cover on the surface of the carbon crystal electric heating material, and the thermal insulation material on the back of the carbon crystal electric heating material, the thermal insulation material continuously reflects the heat energy to the cover on the surface of the heating element, so that the surface temperature continues to rise, after 2-4 minutes, the heating element and the thermal insulation material reach a thermal balance, thermal radiation at a constant temperature, its infrared radiation will not produce high-frequency radiation. There is neither ultraviolet light nor visible light, which is not only harmless to the body, but also improves the microcirculation of the human body, promotes metabolism, improves human immunity, and is beneficial to health. But at the same time, carbon crystal heating also has problems, that is, it is easy to have an uneven temperature in some places, which will accelerate the aging of the carbon crystal heating film, so theoretically speaking, the carbon crystal heating film may not be able to be used for two or three years.
Graphene, on the other hand, is a honeycomb flat film formed by carbon atoms hybridized in sp2, which is a quasi-two-dimensional material with only one atomic layer thickness, so it is also called single-atom layer graphite. It is a new type of electrical, thermal and mechanical material with greater strength than steel, smaller density than aluminum, more corrosion resistance than stainless steel, higher temperature resistance than heat-resistant steel, and conductive like copper. Products are widely used in aerospace, sports equipment, medical equipment. The thickness of graphene is about 0.335nm, and there are different undulations according to different preparation methods, usually about 1nm in the vertical direction and about 10nm to 25nm in the horizontal direction, which is the basic structural unit of all carbon crystals except diamond (zero-dimensional fullerenes, one-dimensional carbon nanotubes, three-dimensional volume-to-graphite).
Due to the characteristics of high conductivity, high strength, ultra-light and thin, the application advantages of graphene in the field of aerospace and military industry are also extremely prominent. Graphene will also play a more important role in potential applications such as ultralight aircraft materials. That is to say, a single layer of carbon atoms is composed of a special structure, but the number of layers cannot be too much, once too much is to go to many excellent properties, this is not graphene. Therefore, most of the doubts about the existence of graphene heating film on the market are like this, and the price of pure graphene is indeed high. However, the graphene heating film is not pure graphene, but a composite product that retains the conductive heating performance of graphene!
